Health
MIT’s new human liver model reveals how it regenerates, providing hope for patients to avoid transplants
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Massachusetts Institute of Know-how (MIT), engineers developed a brand new liver tissue mannequin to assist reveal the phases of liver regeneration in hopes to assist these people with liver illness, in accordance with a brand new research printed within the journal Proceedings of the Nationwide Academy of Sciences. The researchers stated by discovering an efficient option to stimulate the liver to regenerate by itself, some liver transplants might probably be averted and it might assist a donated liver develop after being transplanted, in accordance with a media launch from MIT.
Liver consultants instructed Fox Information that almost all sufferers who want liver transplants are sometimes these identified with power illnesses akin to viral hepatitis, main biliary Cholangitis (PBC), most cancers or fatty liver illness. The researchers hope that by studying how one can make the most of the liver’s regenerative properties, medical doctors may have extra choices for treating power liver illnesses.
In line with MIT, even when 70 % of the liver is eliminated, the remaining tissue can nonetheless regrow to its full dimension inside months. Meredith Stone is a 50-year-old healthcare skilled who was identified with main biliary cholangitis, an autoimmune illness that assaults the bile ducts of liver and damages the liver. Stone was not a part of the research however shared that she now has cirrhosis of the liver, regardless of not consuming alcohol for over 20 years. Stone instructed Fox Information that she is at the moment taking medicines akin to ocaliva and ursodial hoping to gradual the development of the illness and forestall a liver transplant.
“I heard about this research and prayed that these researchers can discover a manner to assist the liver regenerate. It might give such piece of thoughts.” Stone added, “Not a lot analysis is happening for PBC and I simply hope they discover a manner to assist my liver regenerate in addition to different individuals coping with devastating liver illness.”
NEW STUDY GIVES HOPE FOR TREATMENT OF PBC, THE SILENT LIVER DISEASE
Researchers have used research from mice to know the regeneration pathways that happen after liver damage or sickness. In line with the report, one key issue is the reciprocal relationship between cells discovered within the liver known as hepatocytes and the cells that line blood vessels known as endothelial cells. The researchers defined that hepatocytes produce components that assist blood vessels develop, and endothelial cells generate progress components that assist hepatocytes proliferate. The investigators additionally stated that earlier research in mice discovered that blood stream is one other element in sparking regeneration of the liver.
The MIT researchers needed to mannequin liver regeneration interactions, so that they teamed up with Christopher Chen, MD, PhD, the William F. Warren distinguished professor of biomedical engineering at Boston College, who designs microfluidic gadgets with channels that act like blood vessels.
The researchers grew blood vessels alongside considered one of these microfluidic channels after which added aggregates derived from liver cells taken from human organ donors.
They developed a chip designed in order that molecules akin to progress components can stream between the blood vessels and the liver spheroids, in accordance with the discharge. This design allowed the investigators to knock out genes of particular cell sorts and see the way it impacts the general regenerative course of.
Sangeeta Bhatia, who’s a member of MIT’s Koch Institute for Integrative Most cancers Analysis and Institute for Medical Engineering and Science stated within the launch, “For years, individuals have been figuring out completely different genes that appear to be concerned in mouse liver regeneration and a few of them appear to be essential in people, however they’ve by no means managed to determine all the cues to make human liver cells proliferate.”
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This “regeneration on a chip” mannequin confirmed that elevated fluid stream by itself didn’t stimulate the liver cells to start dividing, which is a part of the cycle concerned in liver regeneration. However they did discover that if additionally they offered an inflammatory sign, known as the cytokine IL-1-beta, the liver cells did enter the division cycle, the discharge stated.
The investigators additionally blocked a gene within the endothelial cells that’s chargeable for making prostaglandin E2 (PGE2), a molecule that can be concerned in liver regeneration in zebrafish. By blocking the gene in these cells, they have been in a position to reveal that this molecule stimulates the human liver cells to enter the cell division cycle, in accordance with the report.
The staff plans to discover another progress components and molecules which can be produced on their mannequin throughout liver regeneration. In addition they hope to seek out the indicators that inform the liver when to cease regenerating.
“Proper now when sufferers are available with liver failure, it’s important to transplant them since you don’t know in the event that they’re going to recuperate on their very own. But when we knew who had a strong regenerative response, and if we simply wanted to stabilize them for a short time, we might spare these sufferers from transplant,” Bhatia stated within the MIT launch.
Bhatia hopes the staff of researchers will be capable to harness molecules to assist deal with sufferers with liver failure. The investigators additionally stated that one other risk is that medical doctors might probably use biomarkers to find out the chance {that a} affected person’s liver will regrow by itself.
Health
Chronic Pain Afflicts Billions of People. It’s Time for a Revolution.
“In the beginning, everyone thought they were going to find this one breakthrough pain drug that would replace opioids,” Gereau said. Increasingly, though, it’s looking like chronic pain, like cancer, could end up having a range of genetic and cellular drivers that vary both by condition and by the particular makeup of the person experiencing it. “What we’re learning is that pain is not just one thing,” Gereau added. “It’s a thousand different things, all called ‘pain.’”
For patients, too, the landscape of chronic pain is wildly varied. Some people endure a miserable year of low-back pain, only to have it vanish for no clear reason. Others aren’t so lucky. A friend of a friend spent five years with extreme pain in his arm and face after roughhousing with his son. He had to stop working, couldn’t drive, couldn’t even ride in a car without a neck brace. His doctors prescribed endless medications: the maximum dose of gabapentin, plus duloxetine and others. At one point, he admitted himself to a psychiatric ward, because his pain was so bad that he’d become suicidal. There, he met other people who also became suicidal after years of living with terrible pain day in and day out.
The thing that makes chronic pain so awful is that it’s chronic: a grinding distress that never ends. For those with extreme pain, that’s easy to understand. But even less severe cases can be miserable. A pain rating of 3 or 4 out of 10 sounds mild, but having it almost all the time is grueling — and limiting. Unlike a broken arm, which gets better, or tendinitis, which hurts mostly in response to overuse, chronic pain makes your whole world shrink. It’s harder to work, and to exercise, and even to do the many smaller things that make life rewarding and rich.
It’s also lonely. When my arms first went crazy, I could barely function. But even after the worst had passed, I saw friends rarely; I still couldn’t drive more than a few minutes, or sit comfortably in a chair, and I felt guilty inviting people over when there wasn’t anything to do. As Christin Veasley, director and co-founder of the Chronic Pain Research Alliance, puts it: “With acute pain, medications, if you take them, they get you over a hump, and you go on your way. What people don’t realize is that when you have chronic pain, even if you’re also taking meds, you rarely feel like you were before. At best, they can reduce your pain, but usually don’t eliminate it.”
A cruel Catch-22 around chronic pain is that it often leads to anxiety and depression, both of which can make pain worse. That’s partly because focusing on a thing can reinforce it, but also because emotional states have physical effects. Both anxiety and depression are known to increase inflammation, which can also worsen pain. As a result, pain management often includes cognitive behavioral therapy, meditation practice or other coping skills. But while those tools are vital, it’s notoriously hard to reprogram our reactions. Our minds and bodies have evolved both to anticipate pain and to remember it, making it hard not to worry. And because chronic pain is so uncomfortable and isolating, it’s also depressing.
Health
7 blood pressure mistakes that could be throwing off your readings
Several key mistakes could throw off the accuracy of blood pressure readings for people who take them at home.
The average “normal” blood pressure is 120/80, according to the American Heart Association.
Almost half of all U.S. adults have elevated blood pressure (systolic pressure between 120 and 19 and diastolic pressure less than 80). High blood pressure (hypertension, which is when the systolic pressure is between 130 and 139 or diastolic pressure is between 80 and 89) can raise the risk of heart attack and stroke if left untreated, per the AHA.
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“It is very common to see patients with bad data,” said Dr. Bradley Serwer, a Maryland-based cardiologist and chief medical officer at VitalSolution, an Ingenovis Health company that offers cardiovascular and anesthesiology services to hospitals.
“It is essential to follow the proper standardized instructions.”
The cardiologist shared with Fox News Digital the following common mistakes he often sees patients make when monitoring their blood pressure.
1. Using the wrong arm position
Certain arm positions can lead to inflated results and misdiagnoses of hypertension. This was supported by recent research from Johns Hopkins Medicine.
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People who rested their arms on their laps drove up the top number in the blood pressure reading (systolic pressure) by nearly 4 mmHg, while leaving their arm hanging at their side increased it by nearly 7 mmHg.
For the most accurate results, the guidelines are to rest the arm on a desk or another firm surface at the same level as the heart, Serwer told Fox News Digital.
2. Sitting in the wrong position
“The proper position is to sit upright with your feet on the floor and your legs uncrossed, resting your arm on a flat surface that is level with your heart,” Serwer advised.
3. Using the wrong type or size of cuff
If the cuff is too large or small, measurements will be abnormal, the cardiologist cautioned.
“Most blood pressure monitors use either an arm cuff or a wrist cuff,” he said. “Arm cuffs tend to be more accurate and require fewer steps to ensure accuracy.”
4. Not calibrating the cuff
Serwer said he typically asks all patients to bring their home cuff to the office, where he first measures their blood pressure manually and then uses the patient’s cuff.
“We can then assess the accuracy of their cuff,” he said.
5. Not allowing enough time to equilibrate
The most accurate results are obtained after sitting in a low-stress environment for five minutes, Serwer noted.
“Know your blood pressure, even if you are healthy.”
6. Drinking caffeine beforehand
“Avoid stimulants before measuring your pressure, as caffeine will raise it,” Serwer said.
7. Checking at different times of day
When taking blood pressure, Serwer recommends checking it twice and waiting at least one minute between measurements.
“Blood pressure fluctuates throughout the day, so checking your pressure at the same time each day gives us a better trend,” he added.
Serwer also advises his patients to track their blood pressure readings in a log.
“If the average blood pressure reading is greater than 130/80, they have stage I hypertension and should be evaluated by their primary care provider,” he said.
“If their blood pressure is greater than 180/100 or if they have symptoms of chest pain, shortness of breath or severe headache, they should seek immediate attention.”
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Even if there are no other symptoms other than high blood pressure, Serwer emphasizes that people shouldn’t wait until they have complications before treating hypertension.
“Heart attacks, strokes, renal failure and peripheral vascular disease can often be avoided with early interventions,” he said.
“Know your blood pressure, even if you are healthy.”
In most cases, making lifestyle changes such as improving your diet, exercising regularly and maintaining a healthy weight can help keep blood pressure within a safe range, according to the AHA.
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When necessary, a doctor can provide guidance on medications to treat hypertension that does not respond to lifestyle changes.
Health
Words and game of Scrabble keep married couple in wedded bliss for decades
A married couple who have long enjoyed the game of Scrabble both together and separately before they even met are never at a loss for words — and attribute their wedded bliss in part to their love of the nostalgic game.
They’re still playing in tournaments built around the game decades after they began doing so.
Graham Harding and his wife Helen Harding, both in their 60s, have been married for over 20 years.
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They met in the 1990s at Scrabble tournaments, as news agency SWNS reported.
But it was a “special match” in 2000 that brought the couple together — and has kept them together now.
Graham Harding is from the East Berkshire Scrabble Club, while his wife Helen is from the Leicester Scrabble Club in the U.K.
They have been taking part in the UK Open Scrabble Championship in Reading this week.
“The more words you know, the more ammunition you’ve got.”
“Scrabble is all about having a good vocabulary,” said Graham Harding, SWNS noted.
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“But it is a Scrabble vocabulary — not necessarily everyday English.”
Added Helen Harding, “The more words you know, the more ammunition you’ve got.”
The couple said they were “vague acquaintances” for about five years after they first met.
Then they got together after a special match in Swindon.
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They maintained a long-distance relationship before they got married in 2004.
The couple even brought their Scrabble board to their wedding.
It featured a message with Scrabble pieces that said, “Congratulations on your wedding day” — while their wedding cake said, in Scrabble letters, “Helen and Graham.”
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They each took up the hobby early in life well before they met each other.
The tournament that’s been taking place this week is the first since the COVID pandemic after a five-year break — and the couple has played some two dozen games in it as of Friday, SWNS reported.
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